xref: /linux/tools/memory-model/litmus-tests/CoRW+poonceonce+Once.litmus (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1C CoRW+poonceonce+Once
2
3(*
4 * Result: Never
5 *
6 * Test of read-write coherence, that is, whether or not a read from
7 * a given variable and a later write to that same variable are ordered.
8 *)
9
10{}
11
12P0(int *x)
13{
14	int r0;
15
16	r0 = READ_ONCE(*x);
17	WRITE_ONCE(*x, 1);
18}
19
20P1(int *x)
21{
22	WRITE_ONCE(*x, 2);
23}
24
25exists (x=2 /\ 0:r0=2)
26